Thank you both for your replies. They are really helpful.
Fuzzylogician, I absolutely agree with your arguments. I am getting myself more and more convinced with the fact that I should finish the degree and focus on what I want to do next. After all, the degree did not turn out to be what I had expected but it has helped me aquire knowledge int the particular area.
When it comes to being fluent in English when you are not a native speaker, I should point out that I myslef am not a native English speaker. The level of English of many of my cassmates, however is absolutely atrocious and this fact is bothering me primarily because our course requires a lot of group work. Being in a group with 4 other students who find it hard to express themselves can make this experience a complete torture and influence our academic record in a rather negative way. It is highly dissapointing and demotivating to see that a large number of people do not comply with the simple English Language entry requirements, and such an occurence suggests strongly that the institution has admitted such students for the doubled amount of fee they are to pay ( non/EU applicants are to pay a much larger tuition according to English laws). It is,indeed sad to see that some universitites have clearly blown this cash-generating action out of proportion and I can daresay that the institution I am attending right now is one of them.
I really want to study Advertising and regret the fact that I did not pursue this desire a little earlier. I did have some strong reasons for that at the time when I was to make the decision, though. Now, I am hoping that time will pass fast and that I will get to put this unpleasant experience behind me. :/